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364 Configuring Switching Information
The selected VLAN is removed, and the device is updated.
Configuring VLAN Membership Using CLI Commands
For information about the CLI commands that perform this function, see the following chapter in the
CLI Reference Guide
:
• Virtual LAN Routing Commands
The following table summarizes the equivalent CLI commands for this feature.
Double VLAN
The Double VLAN feature allows the use of a second tag on network traffic. The additional tag helps
differentiate between customers in the Metropolitan Area Networks (MAN) while preserving individual
customer’s VLAN identification when they enter their own 802.1Q domain.
With the introduction of this second tag, you do not need to divide the 4k VLAN ID space to send traffic
on an Ethernet-based MAN.
With Double VLAN Tunneling enabled, every frame that is transmitted from an interface has a DVLAN
Tag attached while every packet that is received from an interface has a tag removed (if one or more tags
are present).
Use the Double VLAN Global Configuration page to specify the Double VLAN configuration for all the
ports.
To access the Double VLAN Global Configuration page, click Switching
→
VLAN
→
Double VLAN
→
Global Configuration from the navigation tree.
Table 7-26. VLAN Membership Commands
CLI Command Description
name Configures a name to a VLAN.
show interfaces switchport Displays switchport configuration.
show vlan Displays VLAN information.
switchport forbidden vlan Forbids adding specific VLANs to a port.
switchport general allowed vlan Adds or removes VLANs from a port in General mode.
switchport trunk allowed vlan Adds or removes VLANs from a port in general mode.
vlan Creates a VLAN.
vlan database Enters the VLAN database configuration mode.
vlan makestatic Changes a dynamically created VLAN to a static VLAN.